import java.util.Arrays;
import java.util.LinkedList;

public class Test {
    public static void main(String[] args) {
        LinkedList<Integer> list = new LinkedList<>();
        list.add(1);
        list.add(2);
        list.add(3);
        list.add(4);
        System.out.println(list);
        Solution1 solution1 = new Solution1();
        solution1.printList(list);
        int[] arr = new int[10];
        System.out.println(arr.length);
    }
}
